2531904 has 28 divisors (see below), whose sum is σ = 6699504. Its totient is φ = 843904.

The previous prime is 2531891. The next prime is 2531917. The reversal of 2531904 is 4091352.

It is an interprime number because it is at equal distance from previous prime (2531891) and next prime (2531917).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6402 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (239268).

2^2531904 is an apocalyptic number.

2531904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2531904 is an abundant number, since it is smaller than the sum of its proper divisors (4167600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2531904 is a wasteful number, since it uses less digits than its factorization.

2531904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13202 (or 13192 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2531904 is about 1591.1957767666. The cubic root of 2531904 is about 136.2957807047.

The spelling of 2531904 in words is "two million, five hundred thirty-one thousand, nine hundred four".